NonStop S-Series Server Description Manual (G06.24+)

Glossary
HP NonStop S-Series Server Description Manual—520331-003
Glossary-62
$NCP
$NCP. The process name of the network control process.
NEC. National Electrical Code.
network. Two or more computer systems (nodes) connected so that they can exchange
information and share resources. See also Expand network, wide area network (WAN),
and local area network (LAN).
Network Access Method (NAM). The interface through which an Expand-over-ServerNet
line-handler process communicates with the ServerNet cluster monitor process
(SNETMON).
network control process. A process pair, named $NCP, that runs in each system of an
Expand network. $NCP establishes and terminates system-to-system connections,
maintains network-related system tables (including the network routing table, NRT),
calculates the most efficient way to transmit data to other systems in the network,
monitors and logs changes in the status of the network and its systems, informs
$NCPs at neighbor systems of changes in line or Expand line-handler process status,
and aborts pending requests when all paths go down. See also network routing table
(NRT).
Network Information Service (NIS). A distributed name service (formerly known as Yellow
Pages) developed by Sun Microsystems. See also Domain Name System (DNS).
network routing table (NRT). A table that resides in each processor in each system in a
network. The NRT associates each destination system with the logical device (LDEV)
number of the best-path route Expand line-handler process to use to send messages
to that system. See also network control process.
network topology. The physical layout of components that define a system, a local area
network (LAN), or a wide area network (WAN).
neutral. (1) The conductor used as the primary return for current during normal operation of
electrical equipment. (2) The junction of the legs in a wye circuit. See also wye
.
NIS. See Network Information Service (NIS)
.
nld utility. (1) The utility that collects, links, and modifies code and data blocks from one or
more object files to produce a target TNS/R native object file. The nld utility is similar
to the Binder program used in the TNS development environment. (2) The native link
editor invoked during system generation to build the TSYSCLR and TSYSDP2 files.
NNA. See node-numbering agent (NNA).
NNA PIC. See node-numbering agent (NNA) plug-in card (PIC).
node. (1) A uniquely identified computer system connected to one or more other computer
systems in a network. See also Expand node and ServerNet node. (2) An endpoint in
a ServerNet fabric, such as a processor or ServerNet addressable controller (SAC).